TITLE: Oxygenated octane enhancers: Syngas to isobutylene. Technical progress report No. 8, January 1, 1993--March 31, 1993.

AUTHOR: P. T. Barger.

INST.  AUTHOR: UOP, Inc., Des Plaines, IL.

SPONSOR: Department of Energy, Washington, DC.


PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  25 Oct 93,  6p.



The goal of this program is to develop a catalyst and a process for the conversion of syngas to isobutylene. However, due to the low conversion and selectivity generally experienced by the industry in direct conversion of syngas to isobutylene, indirect conversion via branched C(sub 4) alcohol intermediates is being explored. The objectives of the current program are to develop a catalyst and process for the conversion of syngas to isobutanol and to evaluate the commercial potential of the new process.  The research program underway at UOP will identify and optimize key catalyst and process characteristics. This report covers the modification and shake-down of a fixed-bed pilot plant (No. 700) for the testing of catalysts and catalyst combinations. A separate syngas feed system has been added to an existing fixed bed Fischer-Tropsch pilot plant and new reactors are constructed to avoid catalyst cross contamination. Shake-down testing with a commercial Cu/Zn/Al oxide catalyst alone and in combination with a basic Mg/Al MOSS (Metal Oxide Solid Solution) catalyst have demonstrated good CO and H(sub 2) conversion. However, contamination of the product by residual Fischer-Tropsch product in the exit lines and the liquid gas chromatograph (GC) has prevented accurate product analyses. A separate exit system and liquid GC have been added to the plant for use by the higher alcohols synthesis project.